1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
pishuonlain [190]
3 years ago
5

A 30% solution of fertilizer is to be mixed with a 70% solution of fertilizer in order to get 40 gallons of a 60% solution. How

many gallons of the 30% solution and 70%
solution should be mixed?
lion of the 30% solution should be mixed?
Mathematics
1 answer:
Murrr4er [49]3 years ago
5 0

Answer:10 gallons of 30% solution and 30 gallons of 70% solution should be mixed.

Step-by-step explanation:

Let x represent the number of gallons of the 30% solution that should be mixed.

Let y represent the number of gallons of the 70% solution that should be mixed.

The total number of gallons of the mixture to be made is 40. This means that

x + y = 40

The 30% solution of fertilizer is to be mixed with a 70% solution of fertilizer in order to get 40 gallons of a 60% solution. This means that

0.3x + 0.7y = 0.6 × 40

0.3x + 0.7y = 24- - - - - - - - - - - - - -1

Substituting x = 40 - y into equation 1, it becomes

0.3(40 - y) + 0.7y = 24

12 - 0.3y + 0.7y = 24

- 0.3y + 0.7y = 24 - 12

0.4y = 12

y = 12/0.4

y = 30

x = 40 - y = 40 - 30

x = 10

You might be interested in
5r-2=6r+5 what does r equal​
Anuta_ua [19.1K]

Answer:

r=-7

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
What was john paul vann lifespan
fgiga [73]
He was born on July 2, 1924 and he died on  June 9, 1972
~Hope this helped
4 0
3 years ago
Plss solve 29 for me.with the steps<br> plsssßs I am begging u
lakkis [162]
That means that the first rectangle and the first triangle ave athe same perimiter

so therefor
perimiter=sides added up
 rectangle has 4 sides bu 2 is given so double it since the other side is same legnth
rec=x+x+4
multiply 2
2x+2x+8=4x+8=perimiter
this is equal to perimiter of triangle which is
x+9+x+5+x=3x+14
therefor
4x+8=3x+14
subtract 3x from both sides
x+8=14
subtract 8 from both sides
x=6
first one x=6





second rectangle and second triangle
s+7 and 3s
2 sides
2s+14+6s=p
8s+14=p

traignel=2s+12+2s+12+2s+12=6s+36=p
they are equal so
8s+14=6s+36
subtract 6s from both sides
2s+14=36
subtract 14 from both sides
2s=22
divide both sideds by 2
s=11






the values are
pair one:
x=6

pair 2:
s=11

5 0
2 years ago
Please answer this correctly
kiruha [24]
I think they are at 7:10 pm
6 0
3 years ago
Read 2 more answers
( what’s the better deal ) please help me with this, i’ve been trying for a long time
ValentinkaMS [17]

Answer:

Brand A is the better deal!

Step-by-step explanation:

Let's start by comparing.

We know brand B has the following cost: 5 ounces = $3.75

10 ounces $7.50 and 16 ounces = $12

Now check the graph.

6 ounces cost $3

12 ounces cost $6

20 ounces cost $10

I don't think we need to look any further but brand A is the better deal!

8 0
2 years ago
Other questions:
  • Joshua has more than 250 toy soldiers. When he tries to arrange them in rows of 3, there are 2 left over. When he tries to arran
    14·1 answer
  • How do I solve this?
    12·1 answer
  • How could you model 5 students sharing 4 bags of popcorn equally? How much will each student get?
    10·1 answer
  • Find the area to the combined rectangle
    12·1 answer
  • Pls answer ASAP I need help
    9·1 answer
  • 21,400 in standard form
    11·2 answers
  • Jim bought d donuts at $0.98 each. Write an expression for the total cost of donuts
    10·2 answers
  • Simplify (8m2+m+7m2)-(3m-4m3+2m2)
    14·1 answer
  • What is the graph of this function?​
    7·1 answer
  • Sam had X number of toys. He received five more for his birthday. He still has less than 24 toy cars. Which inequality correctly
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!